Added error check for output buffer size.
The output buffer size given by the application, needs to be checked
in every process call. This is required in the case of resolution
change.
Bug: 36006815
Test: avcdec -i poc.bin
Change-Id: I16a92cdad23eb7b1e12c1a67c1b2599204f29249
(cherry picked from commit 3f6c941de5cd959072fa046c9d6cb26fa0f01dc6)